RuntimeException的：原生字体不能作出或内存泄漏定制的TextView装载字体 [英] RuntimeException: native typeface cannot be made or memory leak for custom TextView loading font

问题描述

有一个在我的code一个巨大的问题，其中我从一个自定义的 TextView的<加载在我的资产的字体\字体\ 文件夹/ code>类。第一个问题是，它崩溃的4.0设备除外产生的原因：java.lang.RuntimeException的：本地字体不能言。我用的是同样的过程<一href="http://alinberce.word$p$pss.com/2012/01/25/using-custom-fonts-in-android-bold-italic-regular-you-name-it/"相对=nofollow>这里与方法：

There's a HUGE problem in my code wherein I am loading a font in my assets\fonts\ folder from a custom TextView class. The first problem is that it crashes on 4.0 devices with the exception Caused by: java.lang.RuntimeException: native typeface cannot be made. I was using the same process here with the method:

public class MyTextView extends TextView {

      public MyTextView(Context context, AttributeSet attrs, int defStyle) {
          super(context, attrs, defStyle);
      }

     public MyTextView(Context context, AttributeSet attrs) {
          super(context, attrs);
      }

     public MyTextView(Context context) {
          super(context);
     }


    public void setTypeface(Typeface tf, int style) {
        if (style == Typeface.BOLD) {
            super.setTypeface(Typeface.createFromAsset(
                    getContext().getAssets(), "fonts/hirakakupronbold.ttf"));
        } else if (style == Typeface.ITALIC) {
            super.setTypeface(Typeface.createFromAsset(
                    getContext().getAssets(), "fonts/hirakakupronitalic.ttf"));
        } else {
            super.setTypeface(Typeface.createFromAsset(
                    getContext().getAssets(), "fonts/hirakakupron.ttf"));
        }
    }
}

请注意，我用的延长的.ttf ，我发现，这是导致的RuntimeException 。所以我转换了各自的字体与 .otf 扩展，现在它已经在4.0设备上运行，但有内存泄漏基础的此处。有变通办法这里，但我不知道如何使用/调用它。任何帮助会做，谢谢你。

Notice that I'm using the extension .ttf, and I found that this is causing the RunTimeException. So I converted the respective fonts with a .otf extensions, and now it runs already in 4.0 devices but has memory leaks basing here. There are workarounds here but I don't know how to use/call it. Any help would do, thank you.

推荐答案

好了，我终于想通了实例内的一个字体对象的TextView 类将同的TextView 被实例化，每次造成这么大的负荷。这引起了我的应用程序滞后，导​​致以 OutOfMemoryException异常终。所以我所做的就是创建一个不同的自定义字体，将打电话给我的字体从资产，使其从字体实例化类类，而不是从的TextView 类。

Okay, so I finally figured that instantiating a TypeFace object inside a TextView class would cause so much load each time that same TextView is instantiated. This caused my app to lag and resulted to OutOfMemoryException eventually. So what I did was to create a different custom TypeFace class that would call my fonts from the assets so that it instantiates from the TypeFace class and not from the TextView class.

下面是我的字体类：

public class TypeFaces {

    private static final Hashtable<String, Typeface> cache = new Hashtable<String, Typeface>();

    public static Typeface getTypeFace(Context context, String assetPath) {
        synchronized (cache) {
            if (!cache.containsKey(assetPath)) {
                try {
                    Typeface typeFace = Typeface.createFromAsset(
                            context.getAssets(), assetPath);
                    cache.put(assetPath, typeFace);
                } catch (Exception e) {
                    Log.e("TypeFaces", "Typeface not loaded.");
                    return null;
                }
            }
            return cache.get(assetPath);
        }
    }
}

和自定​​义的TextView类：

And the custom TextView class:

public class TextViewHirakaku extends TextView {

    public TextViewHirakaku(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public TextViewHirakaku(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public TextViewHirakaku(Context context) {
        super(context);
    }

    public void setTypeface(Typeface tf, int style) {
        if (style == Typeface.BOLD) {
            super.setTypeface(TypeFaces.getTypeFace(getContext(),
                    "fonts/hirakakupronbold.ttf"));
        } else if (style == Typeface.ITALIC) {
            super.setTypeface(TypeFaces.getTypeFace(getContext(),
                    "fonts/hirakakupronitalic.ttf"));
        } else {
            super.setTypeface(TypeFaces.getTypeFace(getContext(),
                    "fonts/hirakakupron.ttf"));
        }
    }
}

请注意，我现在从字体类调用 getTypeFace 方法在这里。

Notice that I'm now calling getTypeFace method from TypeFaces class here.

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